GB/T 18688-2023 Chinese PDF (GB/T18688-2023) GB/T 26882.4-2024 1-2024_Chinese: Instruments and software used

1-2024_Chinese: Instruments and software used for measurements in high-voltage and high-current tests - Part 1: Requirements for instruments for impulse tests (Chinese: 高电压和大电流试验测量用仪器和软件 第1部分：对冲击试验用仪器的要求)

English versions: GB/T 45585-2025

6R/120 for relative scuffing load-carrying capacity of high EP oils (Chinese: 齿轮 FZG试验程序 第2部分：高极压油的相对胶合承载能力FZG阶梯加载试验A10/16

socket-outlets and couplers for industrial purposes - Part 6: Direct current(DC) plugs

GB/T 18688-2023 Chinese PDF (GB/T18688-2023) GB/T 26882.4-2024 1-2024_Chinese: Instruments and software usedGB T 18688 2023_Chinese: Agricultural irrigation equipment Pressure losses in irrigation valves Test method (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18688 2023